bool shader::CompileShader()

in PlayAssetDelivery/NativeSample/common/ndk_helper/shader.cpp [27:69]

• 35 lines of code
• 6 McCabe index (conditional complexity)

bool shader::CompileShader(
    GLuint *shader, const GLenum type, const char *str_file_name,
    const std::map<std::string, std::string> &map_parameters) {
  std::vector<uint8_t> data;
  if (!JNIHelper::GetInstance()->ReadFile(str_file_name, &data)) {
    LOGI("Can not open a file:%s", str_file_name);
    return false;
  }

  const char REPLACEMENT_TAG = '*';
  // Fill-in parameters
  std::string str(data.begin(), data.end());
  std::string str_replacement_map(data.size(), ' ');

  std::map<std::string, std::string>::const_iterator it =
      map_parameters.begin();
  std::map<std::string, std::string>::const_iterator itEnd =
      map_parameters.end();
  while (it != itEnd) {
    size_t pos = 0;
    while ((pos = str.find(it->first, pos)) != std::string::npos) {
      // Check if the sub string is already touched

      size_t replaced_pos = str_replacement_map.find(REPLACEMENT_TAG, pos);
      if (replaced_pos == std::string::npos || replaced_pos > pos) {
        str.replace(pos, it->first.length(), it->second);
        str_replacement_map.replace(pos, it->first.length(), it->first.length(),
                                    REPLACEMENT_TAG);
        pos += it->second.length();
      } else {
        // The replacement target has been touched by other tag, skipping them
        pos += it->second.length();
      }
    }
    it++;
  }

  LOGI("Patched Shdader:\n%s", str.c_str());

  std::vector<uint8_t> v(str.begin(), str.end());
  str.clear();
  return shader::CompileShader(shader, type, v);
}